diff --git a/data/uking_functions.csv b/data/uking_functions.csv
index 3b44e44e..e80304c1 100644
--- a/data/uking_functions.csv
+++ b/data/uking_functions.csv
@@ -82947,7 +82947,7 @@ Address,Quality,Size,Name
 0x0000007100f8c4e4,U,000092,
 0x0000007100f8c540,U,000008,
 0x0000007100f8c548,U,000140,
-0x0000007100f8c5d4,W,000492,_ZN4ksys4phys9RigidBodyC1EjjP12hkpRigidBodyRKN4sead14SafeStringBaseIcEEPNS4_4HeapEb
+0x0000007100f8c5d4,O,000492,_ZN4ksys4phys9RigidBodyC1EjjP12hkpRigidBodyRKN4sead14SafeStringBaseIcEEPNS4_4HeapEb
 0x0000007100f8c7c0,U,000160,
 0x0000007100f8c860,U,000160,
 0x0000007100f8c900,U,000168,
diff --git a/src/KingSystem/Physics/RigidBody/physRigidBody.cpp b/src/KingSystem/Physics/RigidBody/physRigidBody.cpp
index 1129f972..e228cde2 100644
--- a/src/KingSystem/Physics/RigidBody/physRigidBody.cpp
+++ b/src/KingSystem/Physics/RigidBody/physRigidBody.cpp
@@ -7,21 +7,21 @@ namespace ksys::phys {
 // NON_MATCHING
 RigidBody::RigidBody(u32 a, u32 mass_scaling, hkpRigidBody* hk_body, const sead::SafeString& name,
                      sead::Heap* heap, bool a7)
-    : mHkBody(hk_body), mHkBodyMgr(hk_body), _b4(a) {
+    : mCS(heap), mHkBody(hk_body), mHkBodyMgr(hk_body), _b4(a) {
     if (!name.isEmpty()) {
-        hk_body->setName(name.cstr());
+        mHkBody->setName(name.cstr());
     }
-    hk_body->setUserData(reinterpret_cast<hkUlong>(this));
-    hk_body->m_motion.m_savedMotion = nullptr;
-    hk_body->m_motion.m_motionState.m_timeFactor.setOne();
-    hk_body->enableDeactivation(true);
-    hk_body->getCollidableRw()->m_allowedPenetrationDepth = 0.1f;
-    if (mFlags.isOn(Flag1::MassScaling)) {
-        hk_body->m_responseModifierFlags |= 1;
+    mHkBody->setUserData(reinterpret_cast<hkUlong>(this));
+    mHkBody->m_motion.m_savedMotion = nullptr;
+    mHkBody->m_motion.m_motionState.m_timeFactor.setOne();
+    mHkBody->enableDeactivation(true);
+    mHkBody->getCollidableRw()->m_allowedPenetrationDepth = 0.1f;
+    if (mFlags.isOff(Flag1::MassScaling)) {
+        mHkBody->m_responseModifierFlags |= 1;
     }
 
     mFlags.change(Flag1::_80, _b4 == 5);
-    mFlags.change(Flag1::MassScaling, mass_scaling);
+    mFlags.change(Flag1::MassScaling, mass_scaling == 1);
     mFlags.change(Flag1::_10, a7);
     mFlags.set(Flag1::_100);
 }
diff --git a/src/KingSystem/Physics/RigidBody/physRigidBody.h b/src/KingSystem/Physics/RigidBody/physRigidBody.h
index af6e39fc..48e3736d 100644
--- a/src/KingSystem/Physics/RigidBody/physRigidBody.h
+++ b/src/KingSystem/Physics/RigidBody/physRigidBody.h
@@ -19,7 +19,7 @@ class MotionAccessor;
 
 class RigidBase {
 public:
-    virtual ~RigidBase();
+    virtual ~RigidBase() = 0;
 };
 
 class RigidBody : public sead::IDisposer, public RigidBase {
@@ -56,7 +56,21 @@ public:
 
     RigidBody(u32 a, u32 mass_scaling, hkpRigidBody* hk_body, const sead::SafeString& name,
               sead::Heap* heap, bool a7);
-    virtual ~RigidBody();
+    ~RigidBody() override;
+
+    // FIXME: types and names
+    virtual void m4();
+    virtual void m5();
+    virtual void m6();
+    virtual void m7();
+    virtual void m8();
+    // FIXME: should be pure
+    virtual void m9();
+    virtual void m10();
+    virtual void m11();
+    virtual void m12();
+    virtual void m13();
+    virtual void m14();
 
     void sub_7100F8CFA0();
     void setMotionFlag(MotionFlag);
@@ -94,10 +108,11 @@ private:
     void* _90 = nullptr;
     u16 _98 = 0;
     HkBodyMgr mHkBodyMgr;
-    f32 _b0 = 0.0f;
-    u32 _b4;
+    f32 _b0 = 1.0f;
+    u32 _b4 = 0;
     MotionAccessor* mMotionAccessor = nullptr;
     u16 _c0 = 0;
+    u16 _c2 = 0;
     void* _c8 = nullptr;
 };
 KSYS_CHECK_SIZE_NX150(RigidBody, 0xD0);